# A056423 (b-file synthesized from sequence entry)
1 6
2 15
3 50
4 210
5 456
6 4220
7 6960
8 57330
9 188810
10 1518558
11 3302916
12 45916780
13 83747280
14 933074430
15 3920355200
16 22075393725
17 62230996500
18 940379117630
19 1781757016320
20 22856963695482
21 87052415634120